The CAE40E5 is a Schneider Electric EasyPact TVS control relay from the Easy TeSys range, built for switching control circuits. It carries 4 normally-open poles rated for operational voltages up to 690 V with a 48 VAC coil. The contact composition — 4 NO — means it's a straight make-only block; no NC auxiliary for interlocks or status feedback built in. Utilisation categories AC-14 and AC-15 define the load types it's certified for — solenoids, electromagnetic valves, and contactor coils at moderate inductive levels. That's the standard control-circuit duty in a panel, not resistive heating or motor starting. IP2X finger protection on the body means it's safe for open-panel mounting where accidental touch is a concern.
If you need a form-fit-function replacement, the closest active sibling in the Easy TeSys family would need to be evaluated pin-for-pin — same 4 NO contact arrangement, same 48 VAC coil voltage, same DIN-rail footprint. The delta is typically in the coil consumption or the auxiliary contact options; check the spec line yourself before committing the BOM.
Dimensions are 45 mm wide, 74 mm tall, 80 mm deep — a standard compact relay footprint that fits a single DIN-rail module position. The grey RAL 7011 housing is typical for the Easy TeSys line; no colour-coding for voltage or function. Rated for operation from -20 to 70 °C ambient, storage from -60 to 80 °C, and full rating up to 3000 m altitude without derating. The TH protective treatment per IEC 60068 means it's conditioned for humid environments — relevant if the panel sees condensation or washdown mist. Mechanical robustness: the relay holds closed through 10 Gn shock for 11 ms and 3 Gn vibration from 5 to 300 Hz. That's enough for most industrial machinery but not for high-G mobile or marine deck applications without additional damping.